Trump and Xi ended a three-day Washington summit without a major AI deal, with the Guardian reporting the visit favored pageantry over pausing the AI arms race.
The summit produced no substantive AI agreement, leaving the two countries' AI competition unaddressed despite the meeting's prominence.
OpenAI's DevDay 2026 recap post says the event included more than 20 announcements spanning GPT-6 Astra, ChatGPT, Codex, APIs, security, and new builder tools.
OpenAI's @OpenAI account says GPT-6.1 Sol is a significant upgrade over GPT-6 Sol in coding, computer use and complex professional work, nearing GPT-6 Astra on some benchmarks at substantially lower cost.
Microsoft Research published RetroChimera in Nature, an ensemble retrosynthesis model it says outperforms prior models in blind tests, and released its code and weights.
AWS says Claude Sonnet 5.5 is now available on Amazon Bedrock and Claude Platform on AWS, pitched as a cheaper, faster Sonnet for scoped coding and enterprise tasks.
Mark Zuckerberg said on X that Meta's Muse personal agent now handles voice and real-time video, can work in the background during long conversations, and is coming to glasses for hands-free use.
Researchers from MIT, Carnegie Mellon, NYU, and Stanford published an AI in Nature that defeated top-ranked human Stratego players by a large margin while costing far less to train.
